Construction op endless aprons in threshing-machines and grain



A. TOWNSEND.

. Thrashing Machine. No. 7,691. v Patented Oct. 1, 1850.

UNITED STATES are OFFTCE- ASHLEY TOWNSEND, OF PAVILION, NEXV YORK.

CONSTRUCTION OF ENDLESS APRON'S I1 T THRESHING-MACHIN ES AND GRAIN-CLEANERS.

Specification of Letters Patent No. 7,691, dated October 1, 1850.

To all whom it may concern:

Be it known that I, AsHLEY TOWNSEND, of the town of Pavilion, county ofGenesee, and State of New York, have invented a new and usefulImprovement in Machines for Threshing and Cleaning Grain; and I dohereby declare that the following is a full and exact descriptionthereof.

The threshing cylinder B is made of heads of cast iron set on a shaft ofwrought iron and runs on boxes of cast iron or other metal boxes and iscovered with staves of wood or iron and eight or ten rows of teeth setlengthwise about two inches long and set five or six in a row. Theconcave under the cylinder is made of wood or cast iron with three orfour rows of teeth and set so as not to clash with those in thecylinder.

The first or closed apron Cis made of sheet iron on a new and improvedplan and not subject to wear out as the grain beats against it as itplies from the cylinder. The iron is cut into strips about two and ginches wide and criniped into squares and the length of the squares isthe width of the apron and each square forms a joint in the apron and atthe ends of the square is a block of wood nailed in to keep the grainfrom falling off from the ends. Or the iron may be bent across the endswhich will answer the same purpose. The iron squares are nailed orriveted onto five or six straps of leather or connected by an iron chainso as that each square forms a tight box into which the grain falls asit flies from the cylinder and the straw rests on the upper edge of theboxes and is conducted to the fanning mill where the straw is thrown offfrom the iron apron by a fly wheel or rotating beater D onto an openrevolving apron E.

The fly wheel or rotating beater is made with two wings of iron or woodabout five inches wide.

The open apron E is made of slats of wood about five-eighths of an inchsquare set cornerwise in a strong wire chain one to two inches apart.The iron apron C runs on four wheels six inches diameter. The open apronruns on four wheels seven inches diameter. The use of the open apron Eis to finish separating the grain from the straw and conduct the strawout of the machine.

Under the back end of the open apron is a slide or inclined plane F ontowhich the grain falls through the open apron and is conducted back intothe mill by the action of the apron on the inclined plane. The drum G tothe mill is two feet four inches diameter. The shaft on which the wingsof the fan hang has a small .pulley L on the opposite side to the onethat drives the mill, two and a half inches diameter and at the back endof the mill near the end of the shoe, is an iron wheel I with anuprightshaft which shakes the shoe H and on the same shaft is a pulley Jabout five inches diameter which is turned by a strap running from thepulley on the wing or fan shaft. The shoe H to the mill is three feetsix inches long and takes in a screen two feet six inches wide. Thesills to the machine are twelve feet long and framed together with threegirts making the frame two feet ten inches wide inside. The first postto the thresher is two feet from the front end of the sill. The 2d postis two feet eight inches from that and three feet two inches high. Fromthe 2d post to the thresher to the first post in the mill is two feetten inches. To the 2d post in the mill one foot three inches; to the 3dpost in the mill two feet four inches; to the end of the sill sixinches. Frame to the mill one foot four inches high. The first post ontop of the mill that supports the back end of the iron apron is two feetthree inches high. The back post on top of the mill that supports theframe that the open revolving apron runs in is one foot eight incheshigh and set ten inches from the back end of the mill frame. The framein which the open apron runs is eight feet long framed into the firstpost mentioned on the mill and rests on the back posts above named.Letters referring to the drawings A, A, frame work; B, threshingcylinder; C, iron apron; D, fly, or rotating beater; E, open apron; F,inclined plane; G, drum to the mill; H, shoe to the mill; I, iron wheel,and pulley; J, that shakes the mill shoe.

Mode of operation described. The cylinder is turned by a pulley of fiveinches with a strap or rope connected with the horsepower. And on thesame or the other end of the cylinder is a pulley three and a halfinches diameter which runs a strap onto a pulley on the wing shaft orfan to the mill of one foot diameter. [The wing shaft or fan has onanother pulley connected with the twelve inch one of five and a halfinches which drives the iron apron with a cross band running to a pulleyof twelve inches at the upper end of the iron apron. The iron apronpulley is made thick enough to run another strap onto the pulley on oneof the open apron shafts of one foot which pulley has another connectedwith it of the same size which drives the fly or rotating beater by apulley of two and a half inches. The shoe is shaken with a strap runningfrom the small pulley on the left hand side of the wing shaft. Themachine may be built with a thresher connected with the same mannerdescribed.

ASHLEY TOWNSEND.

WVitnesses F. S. BIGELOW, GILMAN BENNETT, M. PARSONS.

